7 Utility Patents
#22,277 in Tokyo
#121,731 in Japan
#598,068 in the World
Forward Citations = 28
Company Filing History:

Jp Steel Plantech Co.
Nippon Kokan Kabushiki Kaisha
4. 2 out of 9
Toshin Seiko Kabushiki Kaisha
5. 1 out of 1
Tokyo Steel M.f.g. Co., Ltd.
where one patent can have more than one assignee
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